Railways – Track layers
Patent
1979-09-19
1983-08-09
Reese, Randolph
Railways
Track layers
238 2, 242 76, 242 8652, 405 38, 405258, E01B 100, E01B 3700
Patent
active
043972411
ABSTRACT:
A system including method and apparatus for laying a separation fabric on the subgrade of a railroad bed. More particularly, the present invention provides a system for laying a separation fabric on the subgrade of an existing railway bed from which the ballast has been removed so that a continuous web of the material can be laid directly on the subgrade prior to reintroducing ballast back to the railway bed below the track and ties. When the ballast has been removed by apparatus such as an undercutter, the separation fabric is introduced without over stressing the track as by raising it high enough to accommodate a pay out roll of the fabric below the ties. The foregoing is accomplished by supporting a supply roll of fabric above the railway track generally parallel thereto, and directing the fabric web to a guide adjacent the bottom of the ties to a pay out roll or surface below the ties at an angle of approximately 45.degree. with the track so that the web can be directed around the surface so as to leave the surface parallel to the railroad track to be deposited on the subgrade.
REFERENCES:
patent: 3368729 (1968-02-01), Connelly et al.
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